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Dafna1 [17]
3 years ago
12

Solve graphically. Be sure to check your solution

Mathematics
1 answer:
ella [17]3 years ago
3 0
X+y=7
X-y=3
_____
2x. =10
2x/2=10/2
X=5
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Anna spent $42 of her savings on music downloads. if the amount she spent was 30% of her savings, how much savings did she have
borishaifa [10]
42/x = 30/100
Flip to get x on top and multiply 42 by 100. You get 4200 and then div that by 30 to get 140.
She had 140 before downloads
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3 years ago
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If a sphere and a cone have the same radius and height how is the volume of a sphere related to the volume of a cone?
lorasvet [3.4K]

Answer:

The volume of the silo is about 142.3 cubic meters. Try It! The volume of a sphere is twice the volume of a cone that has the same circular base and height. The formula for the volume of a sphere with radius r is V= r3.

Step-by-step explanation:

Notice that if a cone and a sphere have equal radius, and if the cone has a height equal to its radius, then the cone will fill the sphere exactly four times. This means that the volume of the sphere is $4 times the volume of the cone.

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4u-3=9
4u=12
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7(3)-4=17
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4 years ago
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What is Gama rays? ‎ ‎​
Arte-miy333 [17]

Answer:

Step-by-step explanation:

penetrating electromagnetic radiation of a kind arising from the radioactive decay of atomic nuclei.

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2 years ago
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Write a recursive formula for a_na n ​ , the n^{\text{th}}n th term of the sequence 16, -8, 4, ...16,−8,4,....
julia-pushkina [17]

Answer:

aₙ = -2aₙ₊₁

Step-by-step explanation:

According to the sequence given 16, -8, 4, ...

a1 = 16

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From the values, we can conclude thst;

a1 = -2(-8)

Since a2 = -8, then;

a1 = -2(a2)

Similarly

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The subsequent sequence are;

a3 = -2a4

The nth term will ne;

aₙ = -2aₙ₊₁

Hence the required recursive function is aₙ = -2aₙ₊₁

3 0
3 years ago
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